jens
0463a64a93
git-svn-id: http://moon:8086/svn/software/trunk/projects/Rbm@580 b431acfa-c32f-4a4a-93f1-934dc6c82436
124 lines
2.5 KiB
C++
124 lines
2.5 KiB
C++
/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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/*
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* File: Layer.cpp
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* Author: jens
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*
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* Created on 25. Oktober 2019, 08:13
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*/
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#include "Layer.hpp"
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using namespace std;
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Layer::Layer(const string &prjname, size_t id, size_t numVisibleX, size_t numVisibleY, size_t numHidden)
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: upper(nullptr)
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, lower(nullptr)
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, m_prjname(prjname)
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, m_id(id)
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, m_numVisibleX(numVisibleX)
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, m_numVisibleY(numVisibleY)
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, m_rbm(m_rbm_params, numVisibleX*numVisibleY, numHidden)
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{
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m_weightsFile = m_prjname + string(".weights.") + to_string((int)m_id) + string(".dat");
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}
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Layer::Layer(const Layer& orig)
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: upper(nullptr)
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, lower(nullptr)
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, m_prjname(orig.m_prjname)
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, m_weightsFile(orig.m_weightsFile)
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, m_id(orig.m_id)
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, m_numVisibleX(orig.m_numVisibleX)
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, m_numVisibleY(orig.m_numVisibleY)
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, m_rbm_params(orig.m_rbm_params)
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, m_rbm(orig.m_rbm)
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{
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}
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Layer::~Layer()
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{
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}
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void Layer::saveWeights()
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{
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FILE *pFile = fopen(m_weightsFile.c_str(), "w");
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if (!pFile)
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{
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std::cout << "Could not open " << m_weightsFile << "!" << std::endl;
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return;
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}
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const arma::mat &bv = rbm().bv();
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const arma::mat &bh = rbm().bh();
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const arma::mat &w = rbm().w();
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size_t numHidden = bh.n_elem;
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size_t numVisible = bv.n_elem;
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fprintf(pFile, "%d %d %d\n", (int)m_numVisibleX, (int)m_numVisibleY, (int)numHidden);
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uint32_t i, j;
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for (i=0; i < numVisible; i++)
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{
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fprintf(pFile, "%3.6f\n", bv(i));
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}
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for (i=0; i < numHidden; i++)
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{
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fprintf(pFile, "%3.6f\n", bh(i));
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}
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for (i=0; i < numVisible; i++)
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{
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for (j=0; j < numHidden; j++)
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{
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fprintf(pFile, "%3.6f ", w(i,j));
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}
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fprintf(pFile, "\n");
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}
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fclose(pFile);
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}
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Rbm& Layer::rbm()
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{
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return m_rbm;
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}
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Json::Value Layer::toJson() const
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{
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Json::Value layer;
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layer["name"] = string("Layer ") + to_string((int)m_id);
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layer["weights_file"] = m_weightsFile;
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layer["numVisibleX"] = to_string((int)m_numVisibleX);
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layer["numVisibleY"] = to_string((int)m_numVisibleX);
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layer["rbm"] = m_rbm.toJson();
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return layer;
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}
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arma::mat Layer::up_pass(const arma::mat &hidden)
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{
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arma::mat reconstruction = rbm().toVisibleProbs(hidden);
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if (upper)
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{
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return upper->up_pass(reconstruction);
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}
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return rbm().toHiddenProbs(reconstruction);
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}
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arma::mat Layer::down_pass(const arma::mat &visible)
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{
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arma::mat hidden = rbm().toHiddenProbs(visible);
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if (lower)
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{
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return lower->down_pass(hidden);
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}
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return rbm().toVisibleProbs(hidden);
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}
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